i think they r the same(japan e90!).i did mine front brake replace to 335i brake caliper,rotor.they r perfect fit on it.but the rear can't fit.i mean u can use the 335 rear brake on,but just can't use the e-brake.(since the inside of 335 rear rotor is bigger)

U can fit them on. Front is a direct bolt on whereas the rear needs some modifications. There are quite a few E90 320 with 335 brakes on them in Singapore. Seems u have to fabricate brackets for the rear.

U can fit them on. Front is a direct bolt on whereas the rear needs some modifications. There are quite a few E90 320 with 335 brakes on them in Singapore. Seems u have to fabricate brackets for the rear.

want to know more for rear brake modification to fit 335's brake.my technician said the caliper and rotor can mount on the car. but the inside rear rotor space is bigger since 335 have bigger e-brake.so i can't use my 325 rear e-brake.according he said,no other bracket needed.but....really want to know how to make them work.thanks!